We all remember our first...

My wife and I have been friendly with Jill and Billy for some years and last month we were invited around to their house for a drink. My wife got dressed with stayup stockings and a little thong. After a few drinks as the conversation came to sex, Billy out of the blue told us that he and Jill used to do wife swapping. This got me horny and as they told us some stories I could see my wife was getting turned on too. Anyway after a few more drinks we asked if we could have some fun - they agreed and Billy put on a blue movie and the girls did a sexy strip for us and to my amazement my wife started fondling Jill, playing with her tits and rubbing her cunt thru her panties. After the strip my wife came over to me and undid my pants and started giving me a blowjob, Jill did the same with Billy then with a twinkle in her eye my wife moved over to suck Billy's cock with Jill. After watching them I asked Billy could I fuck Jill he said, Yes but dont treat her nice, treat her like a slut. So I went behind her and put my cock into her twat and started fucking her, Jill looked at me and said, Slap my arse and me hard. which I did. She then put her hand on her arse and started fingering her arse hole. Billy then got up and took my wife over to the nearest chair and he started licking her out and by the look on her face she was loving it - he then put her legs behind her head, pushed his cock into her and started fucking her. Anyway Jill told me to start fingering her arse hole. After about 5 mins of this she said, Fuck me in the arse and when youre about to cum I want it in my face. so I opened her hole a little bit and in my cock popped and I started fucking her brown eye slowly but hard - she was loving it. I grabbed her hair and pulled it as I was fucking her arse from behind then I felt my cock twitch. I told her I was about to cum and she turned around with her mouth open and a wanked my cock like a mad woman then I spunked 2 lots of lovely cum into her mouth. When I looked over at Billy he was wanking his cock into my wifes face. Anyway the rest of the night was more fucking and drinking anyway the girls went to bed and I stayed down with Billy for a nightcap. After about 20 mins I went for a piss and the girls were asleep. When I got down stairs Billy was watching a blue movie and he started wanking. He asked if I minded, I said no, but I was getting hard see him wank. He got up to put his drink down then he came over to me and he said, Suck my cock - you fucked my wife up the arse so you can suck me. I didnt know what to do. I just opened my mouth and started moving my mouth up and down it, and if I have to be honest it was good. He then held my head and started fucking my mouth. He the told me to get on the floor with him he got in the 69 position and he swallowed my cock to the balls in one go. I carried in sucking him and I felt his cock twitch and he came into my mouth. It was the first time I had tasted cock and here I was swallowing the lot. My cock started to twitch but he pulled it out of his mouth and wanked my spunk all over his face. I'm not gay but it was a great experience. Since then I have met Billy twice - once was in the pub with friends. When I went to the toilet for a piss he pulled me into one of the traps and got my cock out and sucked me off. This time I spunked into his mouth and he swallowed. I didnt have the time to give him a blowjob... but I will soon. I still love fucking my wife but a bit of bi sex is ok for fun.